AT&amp;T has delivered contradictory statements regarding the future of the 250MB for $15 iPad with Wi-Fi + 3G data plan to separate publications. Speaking with Chicago Now, AT&amp;T spokesman Mark Siegel said that users currently on the $30 a month unlimited iPad plan would be able to keep it, while users who havenâ€™t signed up for it will be unable to, and will need to choose from the DataPlus plan, which offers 200MB for a $15 charge, or theâ€¦